Gas filler cap



FIG. 1 is a top plan view of a gas filler cap showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top perspective view thereof; and,

FIG. 6 is a bottom perspective view thereof.

The broken lines shown in the FIGS. 2 and 6 drawing views are forillustrative purposes only and form no part of the claimed design.

The ornamental design for a gas filler cap, as shown and described.